Chemicals: Pervaporation and vapour permeation processes meet specialist needs

Ohlemann, B.

doi:10.1016/s0015-1882(12)70285-9

Cited by 5 publications

(4 citation statements)

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“…The main advantages of such processes and a comparison between PV and VP are summarized in Tables 1 and 2 [34]. Table 1.…”

Section: Pervaporation and Vapor Permeation Principlesmentioning

confidence: 99%

“…Many models could be employed to describe it, however the main principle is the separation of liquid mixtures by partial vaporization through a dense membrane, thus a liquid-vapor phase change is required. Specifically, the passage of a species across the membrane could be explained by the solution-desorption model which results from the following steps: (i) diffusion of the component through the liquid boundary layer to the membrane surface; (ii) sorption/transport of adsorbed species through the membrane according to Fick's law; (iii) desorption at the permeate side into vapor phase [34]. Commonly, the partial vapor pressure difference between the feed solution and the permeate is achieved by employing a sweep gas or vacuum at the permeate side (see Figure 1).…”

Section: Pervaporation (Pv)mentioning

confidence: 99%

“…Additionally, one of the main growing sectors is the separation of organics. Membranes have been developed and tested also at industrial scale, such as for the methanol recovery in the mono-tert-butylether synthesis or for the benzene concentration reduction in gasoline [34].…”

Section: Pv and Vp Applicationsmentioning

confidence: 99%

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Potential of Pervaporation and Vapor Separation with Water Selective Membranes for an Optimized Production of Biofuels—A Review

2017

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Abstract:The development of processes based on the integration of new technologies is of growing interest to industrial catalysis. Recently, significant efforts have been focused on the design of catalytic membrane reactors to improve process performance. In particular, the use of membranes, that allow a selective permeation of water from the reaction mixture, positively affects the reaction evolution by improving conversion for all reactions thermodynamically or kinetically limited by the presence of water. In this paper, how pervaporation (PV) and vapor permeation (VP) technologies can improve the catalytic performance of reactions of industrial interest is considered. Specifically, technological approaches proposed in the literature are discussed with the aim of highlighting advantages and problems encountered in order to address research towards the optimization of membrane reactor configurations for liquid biofuel production in large scale.

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“…The main advantages of such processes and a comparison between PV and VP are summarized in Tables 1 and 2 [34]. Table 1.…”

Section: Pervaporation and Vapor Permeation Principlesmentioning

confidence: 99%

Section: Pervaporation (Pv)mentioning

confidence: 99%

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Potential of Pervaporation and Vapor Separation with Water Selective Membranes for an Optimized Production of Biofuels—A Review

2017

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“…Today, there are also some other membrane manufacturing companies, like Beroplan GmbH (from Germany, ) and Mitsui E&S Co. Ltd. (from Japan, ), which support the industrial uses of PV. In particular, Beroplan GmbH confirms the current use of PV units within the so-called hybrid production processes, aiming for the dehydration of solvents (mainly isopropanol and ethanol). − The PV units have been equipped with membranes based on polymeric and supported zeolite materials. For instance, one of the Mitsui E&S Co. Ltd. plants possesses 16 tubular membrane modules based on 125 pieces of zeolite NaA supported on alpha-alumina, with a thickness of 20–30 μm; such a plant has an installed capacity of 530 L h –1 .…”

Section: Introductionmentioning

confidence: 98%

Pervaporation-Assisted Esterification Reactions by Means of Mixed Matrix Membranes

Castro-Muñoz

Iglesia

Fíla

et al. 2018

Ind. Eng. Chem. Res.

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The incorporation of fillers into polymeric membranes, producing mixed matrix membranes (MMMs), is considered a promising way to improve their separation performance. As an alternative method for the dehydration of organics, pervaporation (PV) technology has recently begun to be implemented to assist esterification reactions, in which the water generated is identified as a limitation to further conversion efficiency. In this regard, the present review conveys the evidence from recent literature reports about PVassisted esterification reactions. Therefore, a particular emphasis will be placed on the enhancements provided by MMMs. Moreover, some key principles regarding the selection of fillers suitable for synergistic effects on water removal are mentioned. In addition, generalities of PV, including the theoretical aspects and its role in separation, are discussed. Finally, an outlook on the future directions based on the latest findings on PV-assisted esterification reactions by means of MMMs is provided, as well as a viewpoint concerning the relationship between the "Twelve Principles of Green Chemistry" and PV technology.

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